Cash-register



J D KING CASH REGISTER.

(No Model.)

No. 448,242. Patented Mar. 17, 1891.

UNITED STATES PATENT OFFICE.

JAMES D. KING, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE LATIMER CASH REGISTER COMPANY, OF DETROIT, MICHIGAN.

CASH-REGISTER.

SPECIFICATION forming part of Letters Patent No. 448,242, dated March 17, 1891.

Application filed April 15, 1890- Serial No. 348,068. (No model.)

To all 207mm, it may concern.-

Be it known that 1, JAMES D. KING, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Oash Registers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to new and useful improvements in cash registers and indicators; and the invention consists in the peculiar construction of a device for preventing the simultaneous operation of two or more keys, all as more fully hereinafter described.

In the drawings which accompany this specification, Figure 1 is a side elevation of the operating parts of a cash-register embodying my device. Fig. 2 is a plan view of one of the groups of keys in said cash-register. Fig. 3 is a cross-section thereof on line a: as.

A are the keys pivoted upon the transverse shaft B and carrying at their rear ends suitable tablet-rods O, which may be of any desired construction and operation, as also may be the registering mechanism (not shown) operated by said keys. Forward of the pivotal point of these keys is the cross-bar D, arranged at right angles to the length of the keys, and which is provided with a series of apertures E-one directly beneath each keyin which the arm F upon the under side of the keys is adapted to enter in the downward movement or operation of said key.

G is a plate slidingly secured upon the bar D, and provided upon its upper surface with a series of arms H, each of which has an inclined face I, arranged beneath each key, these inclines varying in pitch from the right to the left. This bar G is also provided with a series of apertures a, arranged in line with the foot of the inclines and through which the arm F upon a key is adapted to pass when the aperture 0. registers with the aperture E beneath.

The parts being thus constructed and arranged they are intended to operate as follows: Upon the depression of a keysay the key lettered J, shown in Fig. 3-as soon as its downward movement is commenced it strikes against the incline upon the arm II beneath it and slides the bar G to the right.

IVhen it approaches the foot of the incline, the arm F upon the key will enter the aperture a in the bar G and will pass through that aperture and into the aperture E in the stationary bar D, two holes being made to register when the bar G has been moved the distance equal to the horizontal projection of the incline I while the key is traveling down the incline. In this position the sliding bar G is locked against further movement by the entrance of the arm F in the aperture and all of the other apertures a and E are arranged in such relation to each other as to prevent the entering of the arm F-that is, all the other pairs of apertures do not register. As soon as the key is raised, the spring K withdraws it to its normal position.

All the inclines being of different pitch the operation of each key locks the sliding bar Gr in a different adjusted position, and thus prevents the registering of any other pair of apertures than those below the operated key.

Of course, as the two series of apertures do not register it will be impossible for the operation of any other key, and it is evident that with this arrangement of parts the simultaneous operation of two or more keys is prevented, and also the operation of a second key, while a single key is depressed.

lVhat I claim as my invention is 1. In a cash-register, the combination, with the keys having projections thereon, of an apertured bar below the same, a sliding apertured plate above the bar, and a series of varying inclines on the plate with which the keys engage, substantially as described.

2. In a cash register, the combination, with the keys having depending projections thereon, of a stationary apertured bar below the keys, a sliding apertured plate above the bar, inclined proj ections on the plate, and a spring connected with the plate, substantially as described.

In testimony whereof I affix my signature, in presence of two witnesses, this 27th day of February, 1890.

JAMES D. KING.

Witnesses:

JAMES BRADY, WM. G. LATIMER. 

